Cathode for emission of electrons and electron tube with a catho

Details Cathode for emission of electrons and electron tube with a catho Cathode for emission of electrons and electron tube with a catho

1989-06-27

1991-06-04

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313447, 313346R, H01J 2904, H01J 2948

Patent

active

050217089

ABSTRACT:
This cathode has a body made of a material that does not emit electrons, having a substantially smooth non-emissive face and elements made of an emissive material each having an emissive face, spaced out from one another and fixed to the body, for example in hollows with their emissive surface in relief by a determined value with respect to said non-emissive face, so that a protection electrode can be placed between the projecting parts of these elements.

REFERENCES:
patent: 2014539 (1933-04-01), Stansbury
patent: 2581243 (1949-05-01), Dodds
patent: 2883576 (1955-04-01), Harries
patent: 3131328 (1955-09-01), McNaney
patent: 3278791 (1966-10-01), Favre

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